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Home » APEL™ Cyclo Olefin Copolymer (COC) Characteristics
APEL™ Cyclo Olefin Copolymer (COC) Characteristics

Low Birefringence

APEL™ Cyclo Olefin Copolymer's light transmittance of 91%, and low birefringence make it ideal for use in the development of opto-electric applications. As the table below illustrates, its birefringence is further superior to PMMA - less than 5 nm.


Low Moisture Permeability

APEL can be used to develop moisture barrier container and film applications due to its low permeability to water vapor and excellent humidity resistance. Its low moisture absorption prevents swelling and excellent moisture barrier to avoid evaporation of substrates.

As illustrated by the chart below, APEL Cyclo Olefin Copolymer has the lowest moisture permeability relative to other transparent resins.


Chemical Resistance

In addition to excellent moisture impermeability, the Cyclo Olefin Copolymer displays an ability to resist acid, alkalis and alcohol among others. See chart below for full details.


Dimensional Stability

APEL exhibits excellent dimensional stability, with low mold shrinkage and low coefficient of linear expansion.



APEL rates favorably relative to PMMA and PC with a light transmittance of 91%.

Light Transmittance




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